LECO PEGASUS BTX GC-TOFMS

The Pegasus BTX represents the culmination of nearly 30 years of LECO innovation in time-of-flight mass spectrometry for GC and GC×GC applications. Designed for laboratories that demand uncompromising sensitivity, speed, and robustness, the BTX delivers full-spectrum data at all times—even during targeted analyses—so no chemical information is ever lost.

Why Pegasus BTX?

See Everything, All the Time
Collect complete mass range data while running targeted methods. Never miss unknowns or unexpected components hidden in complex matrices.

LECO PEGASUS BTX GC-TOFMS: Collect full mass range data, even when performing targeted analyses. Never miss another clue..jpg

Advanced Deconvolution Algorithms
Powerful spectral deconvolution extracts clean, interpretable spectra—even from the densest chromatograms.

LECO PEGASUS BTX GC-TOFMS: Even in the densest of matrices, uncovering analytes is easier than ever with the help of clean spectra..jpg

StayClean® Ion Source – No Routine Cleaning
The proven StayClean® direct-extraction EI source eliminates the need for source cleaning, even after prolonged exposure to heavy matrices, maximizing uptime.

LECO PEGASUS BTX GC-TOFMS: Stay running with the StayClean­® ion source, which requires no cleaning, even after sustained heavy matrix exposure..jpg

Sensitivity in Spades
Achieve trace-level detection down to femtogram levels using either helium or hydrogen carrier gas.

LECO - LECO PEGASUS BTX GC-TOFMS -Trace-level detection with helium or hydrogen carrier gases - no analytes escape detection.jpg

New Generation TOF Technology
A novel ion path and detector design delivers extraordinary sensitivity in a compact benchtop footprint—revealing analytes that escape conventional GC-MS systems.

Built for Reliability
Backed by LECO’s commitment to robustness, every BTX includes a two-year detector warranty, underscoring confidence in ion path and detector integrity.

Proven Platform, Elevated Performance

Building on more than 8 years of field-proven Pegasus BT systems, the BTX retains what users trust—StayClean® ion source, ultrafast full-spectrum acquisition, and 5 orders of linear dynamic range—while pushing sensitivity and performance to a new level. It is ideally suited for demanding, non-targeted and discovery-driven workflows across:

• Petroleum & energy
• Environmental analysis
• Life sciences
• Pharmaceuticals
• Food safety
• Forensic and other complex-matrix applications

Key Technical Specifications

• Ionization Source: Electron Ionization (StayClean® direct-extraction, open style)
• Mass Analyzer: Time-of-Flight with dual-stage single reflectron
• Detector: Scintillator–Photomultiplier Tube (extended lifetime)
• Mass Range: 10–1500 m/z
• Mass Resolution: >1,100 at m/z 219
• Spectral Acquisition Rate: 1–500 spectra/s (up to 35,000 transients/s)
• Detection Limit (He carrier gas): 10 fg OFN, Quant S/N >10
• Detection Limit (H₂ carrier gas): 10 fg OFN, Quant S/N >10
• IDL: <4 fg (8 replicates of 10 fg OFN)
• Precision: <5 % RSD (15 injections of 100 fg OFN)
• Linear Dynamic Range: 5 orders of magnitude